Post on 23-Feb-2016
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Comparison between tillage transect and supplementary data
GLPF Grant- Team meeting #5July 23-24, 2013
Tillage transects• Developed by NRCS and CTIC
• Record crop, tillage, and estimate residue cover along a road transect throughout the Sandusky River Watershed Seneca, Sandusky, Crawford,
and Wyandot Counties Also used throughout the
Maumee Watershed
• Transects conducted 2x a year (spring and fall) since 2009
• Each transect revisits the exact same GPS coordinates
Dominant crops
Corn Soybean Wheat Hay Other CRP
Across years Corn Soybean Wheat Hay Other CRP
Transect 35% 45% 14% 2.6% 1.5% 1.4%
P strat 36% 39% 22% 1.8% 1.5% n/a
Spring Fall P strat.
2009 2010 2011 2012
% o
f tra
nsec
t
0
10
20
30
40
50
60
70
80
90
100
2009 2010 2011 20120
10
20
30
40
50
60
70
80
90
100
previous planned0
10
20
30
40
50
60
70
80
90
100
2009 2010 2011 20120
10
20
30
40
50
60
70
80
90
100
Corn
• Note: cover and vertical till was not recorded until 2011, zeroes in 2009-2010 doesn’t mean it wasn’t there
No Till Cover Vertical Mulch (>30% residue)Strip (>30% residue) Reduced (15-30% residue) Conventional (plow or <15% residue)
2009 2010 2011 2012
% o
f tra
nsec
t
0
20
40
60
80
100
2009 2010 2011 2012
51%
31%
79%
9%
37% 39%
74% 64% 52% 78%
36%
10%
24%
31%
Spring Fall
25%18%
16%
Corn Soybean Wheat Hay Other
Crop planted next
2009 2010 2011 2012
% o
f tra
nsec
t
0
10
20
30
40
50
60
70
80
90
100
Soybean
• Note: cover and vertical till was not recorded until 2011, zeroes in 2009-2010 doesn’t mean it wasn’t there
No Till Cover Vertical Mulch (>30% residue)Strip (>30% residue) Reduced (15-30% residue) Conventional (plow or <15% residue)
Corn Soybean Wheat Hay Other
Crop planted next2009 2010 2011 2012
% o
f tra
nsec
t
0
20
40
60
80
100
2009 2010 2011 2012
20%
53%
13%
58%
14%19%
60% 64% 59% 75%51%
26%
28%
Spring Fall
34%26%
19%11%
21%17%
14%11%10%
11%23%
2009 2010 2011 2012
% o
f tra
nsec
t
0
10
20
30
40
50
60
70
80
90
100
Wheat
• Note: cover and vertical till was not recorded until 2011, zeroes in 2009-2010 doesn’t mean it wasn’t there
No Till Cover Vertical Mulch (>30% residue)Strip (>30% residue) Reduced (15-30% residue) Conventional (plow or <15% residue)
Corn Soybean Wheat Hay Other
Crop planted next2009 2010 2011 2012
% o
f tra
nsec
t
0
20
40
60
80
100
2009 2010 2011 2012
15%
72%
31%
87%
75%
27% 14% 21% 78%99% 92%
Spring Fall8%
51%
8%
33%
7%12% 10% 12% 13%
Crop rotation compared with Supplementary data
2009 2010 2011 2012
% o
f tra
nsec
t
0
10
20
30
40
50
60
70
80
90
100
2009 2010 2011 20120
10
20
30
40
50
60
70
80
90
100
2009 2010 2011 20120
10
20
30
40
50
60
70
80
90
100
P strat
% o
f tra
nsec
t
0
10
20
30
40
50
60
70
80
90
100
P strat
% o
f tra
nsec
t
0
10
20
30
40
50
60
70
80
90
100
P strat%
of t
rans
ect
0
10
20
30
40
50
60
70
80
90
100
Corn Soybean Wheat Hay Other
After corn: After soybean: After wheat:
P strat Spring Fall
% o
f tra
nsec
t
0
20
40
60
80
100
P strat Spring Fall0
20
40
60
80
100
P strat Spring Fall0
20
40
60
80
100
Tillage practices compared with supplementary data
• Results are very similar for the tillage transect and supplementary data
No Till/Strip Mulch/Vertical Reduced/Plow
Corn Soybean Wheat
67%
77% 70%
14% 14% 32% 20%
68% 47% 69%83% 86% 34%
41%
Questions?